🐳 grafana, prometheus로 메트릭 수집 및 조회

- docker compose로 grafana, prometheus, bitcoin_price_scraper 실행
- grafana 대시보드를 구성해 provisioning 디렉터리에 추가
  - docker compose로 실행하면 미리 구성한 대시보드를 사용

.dockerignore

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+deps
+_build

script/Dockerfile-grafana

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+FROM grafana/grafana:7.4.1
+
+ENV GF_AUTH_DISABLE_LOGIN_FORM "true"
+ENV GF_AUTH_ANONYMOUS_ENABLED "true"
+ENV GF_AUTH_ANONYMOUS_ORG_ROLE "Admin"
+
+ADD provisioning /etc/grafana/provisioning

script/Dockerfile-prometheus

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+FROM prom/prometheus:v2.24.1
+ADD prometheus.yml /etc/prometheus/

script/Dockerfile-scraper

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+FROM elixir:1.11.3-alpine
+
+COPY . /app
+WORKDIR /app
+
+CMD ["script/server"]

script/docker-compose.yml

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+version: '3'
+services:
+  scraper:
+    build:
+      context: ..
+      dockerfile: script/Dockerfile-scraper
+    environment:
+    -  TZ=Asia/Seoul
+    ports:
+    - "8081:8081"
+  prometheus:
+    build:
+      context: .
+      dockerfile: ./Dockerfile-prometheus
+    ports:
+    - "9090:9090"
+    depends_on:
+    - scraper
+    volumes:
+    - prometheus-data:/prometheus
+  grafana:
+    build:
+      context: .
+      dockerfile: ./Dockerfile-grafana
+    ports:
+    - "3000:3000"
+    depends_on:
+    - prometheus
+volumes:
+  prometheus-data:

script/prometheus.yml

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+global:
+  scrape_interval: 15s
+  scrape_timeout: 10s
+  evaluation_interval: 15s
+alerting:
+  alertmanagers:
+  - static_configs:
+    - targets: []
+    scheme: http
+    timeout: 10s
+    api_version: v1
+scrape_configs:
+- job_name: prometheus
+  honor_timestamps: true
+  scrape_interval: 15s
+  scrape_timeout: 10s
+  metrics_path: /metrics
+  scheme: http
+  static_configs:
+  - targets:
+    - scraper:8081